JS: Fix merge of 3963 and 3961 (#3980)

* toString() was moved, not duplicated
* These had gotten lost
* This is now implemented
* Add missing version doctags

applications/system/js_app/packages/fz-sdk/notification/index.d.ts

@@ -14,6 +14,7 @@ export declare function success(): void;
 /**
  * @brief Signals failure to the user via the color LED, speaker and vibration
  *        motor
+ * @version Added in JS SDK 0.1
  */
 export declare function error(): void;